Beta Williamson County, TX only — data and coverage are limited during early access.

16509 ENNIS TRL, AUSTIN, TX 78717

AUSTIN, 78717 — williamson County

3 bed2 bath757 sqftBuilt 2004

Property at a Glance

This home is estimated between $121,037 and $492,271, with a best estimate of $429,631. That places the property below the R250401D - AVERY RANCH EAST (PH. 1) median of $524,962, in a neighborhood that declined 2.2% over the past year.

Estimated Value Range

$121,037 $492,271
Best Estimate
$429,631
WCAD Value
$492,929
Medium Confidence

Based on 5 comparable properties(3 in the same subdivision)

Based on 5 comparable properties (3 in the same subdivision, 2 nearby), the estimated range is $121,037 and $492,271. More comparables in the same subdivision would strengthen this estimate.

Comparable Properties (5)

16620 ENNIS TRL, AUSTIN, TX 78717
0.00 mi 100% similar Same subdivision
3 bed 2 bath 1,257 sqft Built 2004
Raw Value $552,973
Adjusted Value $399,781

Adjusted -$153,192 for 500 sqft less living space. Net adjustment: -$153,192.

16705 ENNIS TRL, AUSTIN, TX 78717
0.00 mi 98% similar Same subdivision
3 bed 2 bath 1,464 sqft Built 2003
Raw Value $653,675
Adjusted Value $429,631

Adjusted -$216,614 for 707 sqft less living space and -$7,430 for being older. Net adjustment: -$224,044.

3 bed 2 bath 925 sqft Built 2009
Raw Value $469,860
Adjusted Value $455,537

Adjusted -$51,473 for 168 sqft less living space and +$37,150 for being newer. Net adjustment: -$14,323.

16625 ENNIS TRL, AUSTIN, TX 78717
0.00 mi 94% similar Same subdivision
3 bed 2 bath 1,857 sqft Built 2003
Raw Value $465,490
Adjusted Value $121,037

Adjusted -$337,023 for 1,100 sqft less living space and -$7,430 for being older. Net adjustment: -$344,453.

3 bed 2 bath 1,013 sqft Built 2010
Raw Value $526,125
Adjusted Value $492,271

Adjusted -$78,434 for 256 sqft less living space and +$44,580 for being newer. Net adjustment: -$33,854.

The Neighborhood

This home is valued 6.1% below the R250401D - AVERY RANCH EAST (PH. 1) median of $524,962. That positions it competitively for buyers comparing within the neighborhood. Note that values in this subdivision declined 2.2% over the past year.

R250401D - AVERY RANCH EAST (PH. 1)

typical
323 Properties
$524,962 Median Value
-2.2% YoY Change
0% Have Pool
100% Have Garage
This Home
$492,929
Median
$524,962

This home is -6.1% below the subdivision median.

Tax Analysis

The estimated annual property tax is $9,618 across all districts. With a homestead exemption claimed, that drops to $7,760 — saving $1,858 per year. That's $647 per month a buyer should budget. The assessed value increased roughly in line with the neighborhood, so a tax protest is unlikely to yield significant savings.

Tax Districts

DistrictTypeRateAnnual Amount
Round Rock ISDSchool0.8931%$4,402
AustinCity0.5240%$2,583
Williamson CountyCounty0.3694%$1,821
Austin Community Collegespecial0.1034%$510
Williamson County FM/RdCounty0.0443%$219
Upper Brushy Creek WCIDWater0.0170%$84
Road District (R02)Road0.0000%$0
Williamson Central Appraisal Districtcad0.0000%$0
Total Annual Tax1.9513%$9,618

Mortgage Context

At today's 30-year mortgage rate of 6.38%, a buyer financing $429,631 would pay approximately $2,682 per month (principal and interest only, excluding taxes and insurance).

Data sourced from Williamson County Appraisal District (WCAD), Texas Education Agency (TEA), and Federal Reserve Economic Data (FRED). Assessment values reflect the appraisal district's estimate, not market sale prices. Report generated 4/18/2026.

View full property details